Home / 42,689.30-63,982.08-30,212.96

Finding the Fourth Proportional to 42,689.30, 63,982.08 and 30,212.96

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Solution

The fourth proportional to 42,689.30, 63,982.08 and 30,212.96 is: 45,282.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,689.30 : 63,982.08 = 30,212.96 : x
  2. Step 2: Convert to fraction form
    42,689.30/63,982.08 = 30,212.96/x
  3. Step 3: Cross multiply
    42,689.30x = 63,982.08 × 30,212.96
  4. Step 4: Simplify right side
    42,689.30x = 1,933,088,023.76
  5. Step 5: Solve for x
    x = 1,933,088,023.76/42,689.30
  6. Step 6: Final answer
    x = 45,282.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.